Measurements of the Total Charge-Changing Cross Sections for Collisions of Fast Ions with Target Gas Using High Current Experiment

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The sum of ionization and charge-exchange cross sections of several gas targets (H2, N2, He, Ne, Kr, Xe, Ar, and water vapor) impacted by 1MeV K+ beam are measured. In a high current ion beam, the self-electric field of the beam is high enough that ions produced from the gas ionization or charge exchange by the ion beam are quickly swept to the sides of accelerator. The flux of the expelled ions is measured by a retarding field analyzer. This allows accurate measuring of the total charge-changing cross sections (ionization plus charge exchange) of the beam interaction with gas. Cross ... continued below

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Covo, Michel Kireeff; Molvik, Arthur W.; Kaganovich, Igor D.; Shnidman, Ariel & Vujic, Jasmina L. April 13, 2009.

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The sum of ionization and charge-exchange cross sections of several gas targets (H2, N2, He, Ne, Kr, Xe, Ar, and water vapor) impacted by 1MeV K+ beam are measured. In a high current ion beam, the self-electric field of the beam is high enough that ions produced from the gas ionization or charge exchange by the ion beam are quickly swept to the sides of accelerator. The flux of the expelled ions is measured by a retarding field analyzer. This allows accurate measuring of the total charge-changing cross sections (ionization plus charge exchange) of the beam interaction with gas. Cross sections for H2, He, and N2 are simulated using classical trajectory Monte Carlo (CTMC) method and compared with the experimental results, showing good agreement.

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  • Journal Name: Physical Review A - Atomic, Molecular, and Optical Physics; Journal Volume: 78; Journal Issue: 3; Related Information: Journal Publication Date: 22 September 2008

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  • Report No.: LBNL-1811E
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 953770
  • Archival Resource Key: ark:/67531/metadc930444

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  • April 13, 2009

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  • Nov. 13, 2016, 7:26 p.m.

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  • Nov. 18, 2016, 4:21 p.m.

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Covo, Michel Kireeff; Molvik, Arthur W.; Kaganovich, Igor D.; Shnidman, Ariel & Vujic, Jasmina L. Measurements of the Total Charge-Changing Cross Sections for Collisions of Fast Ions with Target Gas Using High Current Experiment, article, April 13, 2009; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc930444/: accessed November 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.